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Global fertility in cows has steadily decreased over the last few years. In the UK, for example, first service calving rates fell from 55, 6 to 39, 7% between 1975-1982 and 1995-1998 - a 1% annual decline in first service pregnancy rate. In Spain the fertility indexes in cows have fallen over the last 10 years ago, accompanied by a frequency in the rate of postpartum disturbances and culling from...
Cattle feeding in the region of Great Poland is based on silages from maize, beet leaves and grasses as well as on hay and fodder beets. The aim of this experiment was to study optimization of cattle feeding in relation to their physiological status. Reduction of watery silages, particularly silages from sugar beet leaves, and higher share of hay in diets for dried cows yielded good results with regard...
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